Suspected symbiotic - Spectra required
Posted: Tue Apr 28, 2020 4:06 pm
A request from Adrian Lucy:
If anyone has visibility, we'd like a new optical spectrum of IRAS 13224-5839, one of our symbiotic candidates, to follow up on some possible X-ray variability in recent Swift observations. Any resolution is acceptable. Although I've only seen Balmer lines previously in my observations of this target, just in case I'd like coverage of Halpha, Hbeta, [O III] 5007, and He II 4686.
The coordinates are: 13:25:41.7 -58:55:05.9
Archival V-band photometry ranges from around 13 to 15, but I don't know the current magnitude.
I may want more followup observations in the future on this target, like once every three weeks for a few months, but since it would be better to time to Swift observations (if we get them), I suppose I'll alert you or individual observers later...
Thanks! Hope you're all doing ok and taking care of yourselves. I may have a larger sample of southern targets for you soon...
Adrian B. Lucy
NSF Graduate Research Fellow, Dept. of Astronomy, Columbia University
Note: two new symbiotic stars were discovered in the frame of the observing program proposed by Adrian Lucy +
https://iopscience.iop.org/article/10.3 ... af71c/meta
http://www.astrosurf.com/aras/novae/Inf ... 019-04.pdf
http://www.astrosurf.com/aras/Aras_Data ... pected.htm
If anyone has visibility, we'd like a new optical spectrum of IRAS 13224-5839, one of our symbiotic candidates, to follow up on some possible X-ray variability in recent Swift observations. Any resolution is acceptable. Although I've only seen Balmer lines previously in my observations of this target, just in case I'd like coverage of Halpha, Hbeta, [O III] 5007, and He II 4686.
The coordinates are: 13:25:41.7 -58:55:05.9
Archival V-band photometry ranges from around 13 to 15, but I don't know the current magnitude.
I may want more followup observations in the future on this target, like once every three weeks for a few months, but since it would be better to time to Swift observations (if we get them), I suppose I'll alert you or individual observers later...
Thanks! Hope you're all doing ok and taking care of yourselves. I may have a larger sample of southern targets for you soon...
Adrian B. Lucy
NSF Graduate Research Fellow, Dept. of Astronomy, Columbia University
Note: two new symbiotic stars were discovered in the frame of the observing program proposed by Adrian Lucy +
https://iopscience.iop.org/article/10.3 ... af71c/meta
http://www.astrosurf.com/aras/novae/Inf ... 019-04.pdf
http://www.astrosurf.com/aras/Aras_Data ... pected.htm